00287nam a2200121Ia 45000030006000000080041000060400015000471000015000622450041000772600018001185460012001360050017001480STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSeth, M.L.  aTheory Practice of economic planning  bS.Chandc1967  aEnglish20220125165630.0